<nav class = "navbar navbar-inverse navbar-fixed-top">
    <div class = "container">
        <div class = "navbar-header">
            <button type = "button" class = "navbar-toggle" data-toggle = "collapse" data-target = ".navbar-ex1-collapse">
                <span class = "icon-bar"></span>
                <span class = "icon-bar"></span>
                <span class = "icon-bar"></span>
            </button>
            <a href = "#" class = "navbar-brand">在线竞拍 </a>
        </div>
        <div class = "collapse navbar-collapse navbar-ex1-collapse">
            <ul class = "nav navbar-nav">
                <li><a href = "#">关于我们</a></li>
                <li><a href = "#">联系我们</a></li>
                <li><a href = "#">网站地图</a></li>
            </ul>
        </div>
    </div>
</nav>